A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include floods, tsunami, volcanic, earthquakes, tornadoes and other geologic processes. A natural disaster can cause loss of life or property damage, and typically leaves some economic damage in its wake, the severity of which depends on the affected population’s resilience, or ability to recover. The causes of natural disasters are many. Human activities play a role in the frequency and severity of disasters.
A natural disaster is a disruption in the balance of the environment. The human factor raises the cost, in both property damage and loss of life. Understanding the causes of natural disaster can provide clues to their prevention. volcanic eruptions An eruption begins when pressure on a magma chamber forces magma up through the conduit and out the volcano’s vents. floods Floods are caused by weather phenomena and events that deliver more precipitation to a drainage basin than can be readily absorbed or stored within the basin.
Earthquakes: An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane. Tsunami: A very large ocean wave that is caused by an underwater earthquake or volcanic eruption and often causes extreme destruction when it strikes land Tornadoes A tornado is a violently rotating column of air extending between, and in contact with, a cloud and the surface of the earth.
Fire: A rapid, persistent chemical change that releases heat and light and is accompanied by flame, especially the exothermic oxidation of a combustible substance. Drought:A drought is a long period of very dry weather. It is a long time with little or no rain. Not all natural disasters can be prevented. Each natural disaster has its own factors and complications. Understanding the basic principles of ecology can provide keys to lessening their effects. Nature evolved with natural disasters and disturbance. The best prevention is looking at the strategies found in nature.
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